Abstract: The present disclosure provides a data processing method and related products, the method includes: consuming a first event in a data stream based on a first data structure corresponding to a first function, where the first function is used for finding a target value for a target attribute in the data stream, and a size of a resource occupied by the first data structure in a memory is determined according to an accuracy of a first estimation and with a sublinear cost, and the first estimation is an estimation of the target value; and obtaining the first estimation as an output of the first function based on the consumption.